CVE-2020-12414 : Exploit Details and Defense Strategies

Firefox for iOS version less than 27 is affected by a vulnerability related to IndexedDB not being cleared when leaving private browsing mode.

Understanding CVE-2020-12414

This CVE identifies a security issue in Firefox for iOS that allows IndexedDB to persist in private browsing mode, potentially compromising user privacy.

What is CVE-2020-12414?

The vulnerability arises from incorrect usage of the API for WKWebViewConfiguration, requiring the deletion of the private instance of the object when exiting private mode in Firefox for iOS.

The Impact of CVE-2020-12414

The vulnerability allows for the persistence of IndexedDB data in private browsing mode, potentially exposing sensitive information to unauthorized access.

Technical Details of CVE-2020-12414

Firefox for iOS version less than 27 is susceptible to the following:

Vulnerability Description

IndexedDB is not cleared when leaving private browsing mode
Incorrect usage of WKWebViewConfiguration API

Affected Systems and Versions

Product: Firefox for iOS
Vendor: Mozilla
Versions Affected: < 27

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to access and retrieve IndexedDB data left behind in private browsing mode.

Mitigation and Prevention

To address CVE-2020-12414, consider the following steps:

Immediate Steps to Take

Update Firefox for iOS to version 27 or higher
Clear browsing data regularly, especially when exiting private mode

Long-Term Security Practices

Educate users on the importance of clearing browsing data
Implement regular security updates and patches for Firefox for iOS
Monitor and restrict access to IndexedDB storage

Patching and Updates

Apply the latest patches and updates provided by Mozilla for Firefox for iOS to mitigate the vulnerability.